n' efface pas son zéro
ne effacer pas son zéro
neg v neg det:poss n
n' efface pas son zéro !
 ɛ n WORD_BOUNDARY e f a s WORD_BOUNDARY p a WORD_BOUNDARY s ɔ̃ WORD_BOUNDARY z e ʁ o WORD_BOUNDARY
n ' WORD_BOUNDARY e f f a c e WORD_BOUNDARY p a s WORD_BOUNDARY s o n WORD_BOUNDARY z é r o WORD_BOUNDARY